test = () => {
    console.log("test")
}

let demo01= require('./demo01')    //导入必须书写,表示使用当前路径导入demo01文件内容
let demo02= require('./demo02')
let ret1 = demo01.add(1, 4)
let ret2 = demo02.move(5, 4)

console.log(ret1)
console.log(ret2)